After a spinal disc surgery my friend has ordered that chair. Now I'm 3 days ago from the hospital and have therefore used this chair for a short time. Conclusion, the seating position is upright when adjusting the chair properly. The Po - knee distance can not be set but arises. This fits very well with me (186 cm). Here the roles are under 30 ° out of the tube whereby they can no longer rotate. In addition, the inclusion of roles has bent with my body weight of 80 kg so that we have the roles now removed. The foam indicates the pressure points to already. I would buy a kneeling chair already again, but then a higher quality version.
